constraint

noun
C1+
OPAL
1
C1+
a thing that limits something, or limits your freedom to do something
محدودیت, قید, مانع, تنگنا
synonym restriction
2
C1+
strict control over the way that you behave or are allowed to behave
محدودیت, قید, اجبار
At last we could relax and talk without constraint.